Changes at soil moisture conditions: impact over the atmospheric water Balance and circulation

FERREIRA LORENA; SAULO CELESTE; JULIA PAEGLE; JUAN RUIZ

Ciudad autonoma de Buenos Aires

Workshop; CLARIS LPB; 2008

Departamento de Ciencias de la Atmósfera y los Océanos,FCEyN. UBA

In the last time there has been an increasing interest to understand the interaction between  the Atmospheric processes  and the soil  characteristics. Previous Studies as Paegle y otros (1996) and  Wu y Raman (1997), have identied how certain atmospheric components exhibit strong sensitivity to changes in surface conditions. In our regions few ones as Collini and Berbery (2006) explore this interactions. Identifying land/atmosphere linkages over this particular region, may also have a strong implication on the regional climate, because it has been demonstrated that some atmospherics components (NAL,SALLJ) has an important role in the LPB  warm season precipitation. The purposes of this works are to produce several sensitivity studies employing different soil moisture (SMOIS) initial conditions patterns over South America.To evaluate the impact over the precipitation, the  circulation and the water atmospheric storage. Finally, to evaluate the Model performance in this type of medium range experiments.